This edition was revised in 1641, 1712, 1744, 1819 and 1821.

This second edition has been fully revised to include recent developments in women's health such as:.

This edition was revised and expanded to two volumes printed in 1789-1791.

The second edition in 1841 was revised, corrected and greatly enlarged.

Some later editions of Kuhn's works have been edited and revised by others.

This edition was completely revised and greatly expanded compared to the original version.

The current 4th edition was revised in 1921; this version was not translated into English until 1979.

This edition was revised by May himself and is the definitive edition.

Its British edition is being revised due to concerns that individuals named may sue the author for libel.

How often have editions been revised (modified or updated)?